Improvement in draught-promoters



BQA. HAYCCK. Improvement in Draught-Prbmnters. N0. 114,291. Patented May 21,1871.

@didnt iic BENJAMIN A. HAYCOOK, OF RICHIAND, IOWA.

Letters Patent No. 114,291, dated May 2, 1871.

IMPROVEMENT IN DRAUGHT-PR-OMOTERS'.

The Schedule referred to {xx-these Letters Patent and making part of the same.'

l To all whom 'it may concern Be it known that I, BENJAMIN A. HAYcooK, of Richland, in the county of Keokuk and State of Iowa, have invented a new and improved Draught- Promoter; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawing forming part of this specification.

This invention relates to improvements in apparatus for supplying the air to steam-generating and other furnaces, and consists in an arrangement under the grates of a number of tubes havingv long narrow `orifices for admitting the air, which is preferably supplied by a fanor other forcing apparatus, the said tubes being peculiarly constructed for preventing ashes from falling into them, as hereinafter described.

Figure l is plan View of a system of pipes arranged according to my improvement, and

Figure 2 is a perspective view of a section of one of the pipes, showing the construction of the same, for preventing the ashes from falling into them.

Similar letters of reference indicate corresponding parts.

A represents 'in dotted lines a horizontal section of the front furnace-wall, and

B the main air-supply pipe leading from any corupetent air-blower.

C represents the air-discharging pipes which I propose to attach to B and pass through furnace-wall A under the dre-grate, arranging them asV close together as may be found best, and extending them to the rear end of the grate or nearly so.

In these pipes, near the upper parts, I arrange nari row slots, extending from the front wall to the'rear ends, for the escape of the air in thin blasts to the fire for distributing it as much as possible under the whole area of' the grate.

In order to'prevent the ashes, cinders, and the like falling into the pipes I arrange the shell to'lap at the opening, as shown at D, g. 2, and extend the upper lip E a little beyond the vertical center, so that the matter falling over it will roll down the side of the i pipe.

rIhis application of the air I find much more effective and economical in fuel than any other.

I propose to employ as many of the pipes as may be found best, and to make such other changes in the arrangement as may be required by the nature of the case in hand.

Having thus described my invention,

I claim as new and desire to secure by Letters Patent- The pipe C, constructed as described, with the lip at one side of the longitudinal orifice projecting over and beyond the other lip on the opposite side of said orice, as represented at D, whereby the matter fall` ing over the edges E will be caused to roll downV the sidesof the pipe, substantially as described.

BENJAMIN A. HAYOOCK.

Witnesses: I

H: WIGHTMAN, J oHN WAssoN. 

